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4 Sheets-Sheet '1. T. PARKER.

BRICK PRESS.

(No Model.)

No. 535,074. Patented Mar. 5, 1895.

(No Model.) 4 Sheets-Sheet 3.

T. PARKER.

BRICK PRESS.

N0.*535,074. Patented Mar. 5, 1-895.

Mmesses.

(No Model.) 4 Sheets-Sheet 4.

T. PARKER.

BRICK PRESS.

No. 535,074. Patented Mar. 5, 1895.

MZIZGSSS. fizllzlolr zzww tim rs STATES PATENT OFFICE.

THOMAS PARKER, OF TORONTO, CANADA, ASSIGNOR OF THREE-FOURTHS TO JOHNDOUGLAS WEIGHT AND ALEXANDER MAXWELL COLQUHOUN, OF

SAME PLACE.

BRICK-PRESS.

SPECIFICATION forming part of Letters Patent No. 53 5,074, dated March5, 1895.

Application filed February 1,1894. Serial No. 498,753. (No model.)

To aZZ whom it may concern:

Beit known that I, THOMAS PARKER, man ufacturer, of the city of Toronto,in the county of York, in the Province of Ontario, Canada,

5 have invented certain new anduseful Im provements in Brick-Presses, ofwhich the following is a specification.

My invention relates to improvements in brick presses and the object ofthe invention I is, first, to provide a simple, readily fed, and cheaplyoperated machine of minimum size and weight and capable of turning out amaximum quantity of perfectly formed bricks, the plungers being arrangedand operated so that there will be no side strain-or thrust upon themain driving shaft, and, secondly, to provide a simple and efficientmeans for the delivery of the bricks from such machine; and it consistsessentially,

first, of constructing the bed plate of the machine with horizontal,outwardly project;

ing wings situated diametrically opposite to each other and havingsecured to them the molds in which the pulverized clay is pressed byhorizontal radial plungers arranged in pairs diametrically opposite eachother, both plungers of each pair being operated simultaneously from adouble cam secured to the main shaft of the machine, the plungers beingdesigned to co-act with compression blocks formed of bricks partiallycompleted and completed, so as to deliver the bricks at the outer end ofthe machine, a cut-off plate for the clay being provided which is alsooperated 5 from an arm on the main shaft and the clay being arranged tobe fed into the top side of the mold,and, secondly, of providing anannular turn table which is set eccentrically to the axis of the mainshaft and is rotated ata 4o proper relative speed to the time consumedin compressing one set of bricks, so that each set compressed may becarried to a common point of delivery, the whole being arranged andconstructed in detail as hereinafter more particularly explained.

Figure 1, is a perspective view of a portion of my machine showing theconstruction and means of operation as to one pair of molds. Fig. 2, isa perspective sectional view through Fig. 1. Fig. 3, is a plan viewshowing the construction and means of operating each pair of plungers.Fig. 4, is a plan view on a smaller scale with feed hoppers removedshowing the construction and means of operating my machine when madewith two pairs of molds. Fig. 5, is a detail of the cutoff plate.

In the drawings like letters and numerals of reference indicatecorresponding parts in each figure.

A, is the bed plate of the machine, which is supported upon anysuitablefoundation and is provided with outwardly extending wings,

B, upon which are supported horizontal molds, C.

D, is the main shaft of the machine, which is vertically journaled inthe bed plate, A, and has secured to it a bevel gear wheel, E, which isdriven by agear pinion, F, on the radial shaft, G, to which motion iscommuni- 7o cated through the belt, H, and pulley, I. The shaft, G, isshown broken away in Fig. l.

J, is a double cam secured to the main shaft,

D, comprised of two gradual rises from the center and two quicklyreceding portions to the center from the two greatest radii. The risesand receding portions of the cam correspond exactly.

j, are guiding ribs forming part of the cam and extending along theedges of the reced- 8o ing portions.

j, are spring fingers secured to the end of the guiding ribs nearest thecenter and extending beyond such end as shown.

K, are the plungers, both plungers of each pair being set diametricallyopposite each other, so that the plane passing through the axis of theshaft will pass laterally through the center of the plungers of eachpair.

K, are the legs of plungers between which are journaled at their innerends upon the studs, Z, the friction rollers, L.

A, A, are bearing plates which are attached to or form part of the bedplate, A. The legs, K, move between the plates, A, 5 and, A. The plate,A", has inwardly extending projections, a, which are designed to receivethe lateral pressure from the legs, K, of the plunger as they are beingforced outwardly so as to bring the plungerinto the Ice mold. The planepassing through the axis of the shaft will pass through the axis of thefriction rollers of both plungers in each pair.

m, are friction rollers which are designed 5 to pass within the guidingribs, j, in order to pull back the plunger-s after they have compressedthe brick.

C, are the sides of the mold, O, which are preferably slightly taperedfrom the inner end to the outer end. The upper side of the mold, O, isopen and has secured above it the hopper, M, into which the pulverizedclay is fed in any suitable manner.

are the parallel sides of the mold which extend, from the opening intowhich the pulverized clay is fed, to the outer end of the mold which isopen.

N, is a double arm secured to the main shaft, D, and provided withconcentric ends, 01.

O, is a cut-off plate which is designed to move in supporting brackets,P, and, Q, attached to or forming part of the mold box. The plate, 0,has metal side strips, 0, secured to the free end of the plate andextending outwardly to a supplemental plate, 0, to which the ends of themetalstrips are secured. The lower edges of the metal strips, 0, arebeveled from the inside outwardly to a thin edge. The block, 0, isdesigned to be moved through openings,0, made in the sides of the metalbox immediately above the sides of the mold. The side strips, 0, are ofthe same thickness as the bottom sides of the hoppers, M, underneathwhich they move. Each of the brackets, P, has a channel, p, as indicatedby dotted lines in Figs. 3 and 4t, and longitudinal perspective sectionin Fig. 1. The channel, 13, is closed in at the top by a cover plate,19. Each bracket, Q, has a longitudinal groove, 40 q. The outer end ofeach groove is stopped by a bridge, q.

R, are bell-cranks pivoted at, s, on the top of the standard brackets,S. The ends of the short arms of the bell-cranks, R, co-act with theconcentric ends, it, of the double arm, I so as to withdraw the plate,0, and thereby bring the opening between the strips, 0, directly abovethe mold and beneath the hopper, M.

'r, are slots made in the ends of the long arms of the bell cranks and,0', are pins which extend from the lugs, 0", at the outer end of thecut-off plates, 0, into the slots, 1'.

T, are spiral springs connecting the long arms of the bell cranks-R, tothe upwardly extending plates, A, forming part of the bed plate, A.

In order to provide for the ejection of the brick after it has beencompressed I provide the following mechanism:

U, is a stop block substantially angular in cross section and providedwith a lip,tt, at its inner upper end. The stop block, U, is secured tothe spindle, u, which is journaled in the brackets, U, secured to theend of the mold box. to, is an arm secured at one end of the spindle,to. The arm, 16'', has connected to it a rod, V, which extends inwardlythrough a bracket, o, secured in the side of the mold box.

V, is a spiral spring extending between the bracket, 1/, and a collar,1;, on the rod, V.

1;", is a stop collar secured on the rod,V, to the inside of thebracket, 47;, and is designed to limit the outward movement of the rod.

V", is an enlarged inclined inner end of the rod, V, and, W', is a blockwith an inclined face corresponding to the inclined face of the end, V".

The bracket, 1), through which the rod, V, passes has a holesufficiently large to permit of a vertical movement of the rod atthisend. It will now be seen upon the plunger being thrown outwardly so asto completely compress a brick that upon the full throw being completedthe end, V", will come in contact with the inclined block, W, and rideupon and pass over it. Immediately upon the plun ger being brought backthe enlarged end, V", will draw upon the rod, V, so as to throw the lip,u, downwardly and thereby cause the brick which is ejected from the moldto fall into the bottomless box, to. The box, 10, is provided with aspring side, 10. \Vhen the brick is caused to dropinto the box by thelip,u, theweight of the brick forces the spring side, to, inwardlygradually in its descent, the pressure of the spring side beingmaintained until the top of the brick has passed the bottom of the box,10, when the brick will drop a slight distance on to the turn tablehereinafter described.

As it is necessary to provide means whereby the amount of clay to bedeposited in the mold may be gaged in order to produce a brick ofgreater or less degree of denseness or hardness I provide a set screw,a, provided with a thumb nut, a which passes through a lug, a, formingpart of the upwardly extending bracket, A. The outer end of the setscrew a, is brought against alug, 7;, formed on the plunger, K. Byscrewing the thumb nut, ct, to the right or left the distance which theinner end of the plunger extends into the mold may be adjusted to anicety, so that such end may always assume such position at thecommencement and finish of each stroke. In order to compensate for thisadjustmentI have provided as hereinbefore described the spring fingersj,which extend beyond the end of the ribs, j, the spring fingers of coursebeing of sufficient strength to overcome the weight of the plunger, K.

In order to provide for the perforation of the brick, so that it may bemore readily burned I use the following device:

X, is a plate, which is secured to the inner ends of the upwardlyextending plates, A, and, A. The plate, X, is an easy fit within thelegs, K, of the plungers, so that the said plungers readilypassoutwardly and inwardly.

Y, is a series of rods the inner ends of which are secured in the plate,X. The rods Y, extend through the plunger, K, through the mold into thecompression blocks, Z. As there are always a number of blocks within theparallel portion, 0', of the mold, C, it will be understood that theouter ends of the rods, Y, are always supported in exactly the sameposition.

In starting the machine there will of course be compression blocksplaced in the parallel portion, 0, of the mold so that the plunger wouldhave blocks with a frictional resistance to press against when formingeach brick. This is the principle which I follow out in my invention,theend ofthe mold being left open as shown.

2, is a turn table, which is arranged eccentric to the main drivingshaft, D. The turn table, 2, passes beneath three of the wings asindicated in Fig. 4, and is supported in turning upon rollers or wheels,which rest on a circular track, suitable means being provided fordriving the turn table from the motive power. It will consequently beseen that the bricks from each mold will be deposited upon a differentposition on the turn table, 2. For instance on reference to Fig. Litwill be seen that the brick ejected from the mold on the left hand sideof this figure will be deposited near the outer circumference of theturn table and the brick ejected from the mold at the right hand side inthis case will be deposited upon the turn table near the innercircumference, the brick delivered from the mold shown at the top ofthis figure will be ejected and deposited upon the turn table in theposition near to the innermost brick deposited and the brick of the moldshown at the bottom of this figure will be ejected and deposited uponthe turn table near the position of depositing of the outermost brick.As the bricks are deposited it will be seen that the turn table, whichof course is arranged to rotate at a certain ratio to the cam on themain shaft, will as indicated in Fig. 4:, bring the bricks to a commonpoint of delivery namely the stop bar, 3, so that four bricks may beremoved by the attendant of the machine at the same time, therebyavoiding the attention that would be necessary if such a delivery as myturn table were not provided.

In the operation of my machine it will be seen that the cam, J, operateson both plungers of each pair simultaneously, the plungers beingthrowninto the mold as the risesin the cam pass the frictional rollers, L, andoutof the mold after the greatest radius has been reached by thefriction rollers, M, passing within the guiding ribs, j. It will benoticed that midway between the receding position and the rise of thecam there is a short concentric portion during which the cam does notoperate upon the plungers but allows of their resting for a momentduring the period that the plate, 0, is being drawn and held out bycrank, R, oo-acting with the concentric portionm, of the doublearm, N,so as to bring the open portion of the plate, 0, directly above the topof the mold and therebygive time for the feeding of the pulverized clay,which passes down into the mold past and around the rods, Y. Immediatelyhowever before the rollers are caused to ascend upon the rise of the camthe short end of the bell-crank, R, has passed the concentric portion,71, of the double arm, N, and the spring, T, has thrown the crank arminwardly, so as to throw the plate, 0, directly above the top of themold and completely close it, thereby completely shutting off the clayand allowing of the perfect pressure of the brick by the plunger. Whenthe cut-off plate has been thrown outwardly it of course carries with itthe clay in the opening underneath the cover plate, 19, of the bracket,P, and this clay is thrown back again upon the return of the opening inthe plate, 0, directly beneath the feed hopper and such clay passes downinto the mold before the clay from the feed hopper. It will be seen fromthis description that as my plungers act in pairs upon correspondingportions of the cam simultaneously that there is no side strain orthrust upon the main shaft of the machine as is common in all brickpresses of which I am aware. It will consequently be seen that the shaftoperating the plungers may be made of much less diameter than itotherwise would if there was a side strain as well as torsion upon theshaft. It will also be seen that the size of the machine and the partsthereof will be comparatively small and the mannerin which the brick arefed and delivered very advantageous both as to rapidity of pressure anddelivery.

I find in practice that after the brick has been compressed and forms acompression block for the next brick the bricks pass out of the openended mold adhering together, but a slight knock completely separatesthe end brick without in any way detrimentally afiecting the perfectformation of the brick, thus dispensing with any necessity of closingthe end of the mold.

\Vhat I claim as my invention is 1. The combination with thehorizontally moving plungers, means for reciprocating the same, the openmouth molds, the bottomless box adjacent thereto, and means forseparating and discharging the bricks into said box, substantially asdescribed.

2. The combination with the radial plungers, K, arranged in pairshorizontally and provided with legs, K, in which are journaled thefriction rollers, L, and the molds also arranged horizontally, fed fromthe side, and provided with open ends, of a cam J, provided with tworises and receding portions and guiding ribs, j, made on the edge of thereceding portion and designed to co-act with the friction rollers, m, onthe end of each leg as and for the purpose specified.

3. The combination with the radial plungers, K, arranged in pairshorizontally, and provided with legs, K, in which are journaled thefriction rollers, L, and the molds also arranged horizontally, fed fromthe top side, and provided with open ends, of a cam, J, provided withtwo rises, receding and concentric portions, guiding ribs, j, secured tothe cam, J, and having inwardly extending spring fingers, j, attachedthereto, which are designed to bring the leg, K, of each plunger againstthe end of the set screw, a, suitably supported in the frame asspecified.

4. The combination with the radial plungers, K, arranged in pairshorizontally, of a double cam, J, secured to the vertical driving shaft,D, the open ended molds, C, designed to receive the ends of the plungersand provided with top side openings for the feeding of the clay, theplate, 0, for each mold supported in suitable guides and the bell-crank,B, one end of which is slotted to receive the pin 0, and the other endof which is designed to co-act with the concentric end, it, of thedouble cam, N, and the spiral spring T, connecting the long arm of thebell-crank to the frame as and for the purpose specified.

5. The combination with the radial plungers, K, arranged in pairshorizontally, the double cam, J, secured to the vertical driving shaft,D, the open ended molds, 0, designed to receive the ends of theplungers, the compression blocks or bricks, Z, having frictional contactat the side of the mold and the plates, 0, deriving a lateralreciprocating movement, of the stop blocks, U, provided with lips, u,and means whereby the lips are thrown downwardly as and for the purposespecified.

6. The combination with the radial plungers, K, arranged in pairshorizontally, the double cam, J, secured to the vertical driving shaft,D, the open ended molds, 0, designed to receive the ends of theplungers, the compression blocks or bricks, Z, having frictional contactat the side of the mold and the plates, 0, deriving a lateralreciprocating movement, of the stop blocks, U, provided with lips, 10,suitably journaled in the brackets, U, having arms, to, secured in theend of the spindle, at, rod, V, having inclined ends, V, bracket, 1*,spring, V, and the inclined block, W, secured to the plunger, K, as andfor the purpose specified.

7. The combination with the radial plun gers, K, arranged in pairshorizontally and moving within side bearing plates, A A, the plate, A,of which has inwardly extending projections, 00, of the double cam, J,open ended molds, O, and plate, 0, arranged as shown and for the purposespecified.

S. The combination with the radial plungers, K, arranged in pairshorizontally and moving within side bearing plates, A, A", and the cam,J, operating the plungers, of the open ended molds and the rods, Y,secured to the plate, X, fastened to the guiding plates, A, A, andpassing through the plungers and mold into the compression blocks Z, asand for the purpose specified.

9. The combination with the radial plungers, K, arranged in pairshorizontally and moving within suitable bearing plates and the camoperating the plungers, of the open ended molds, the stop blocks, U,supported in suitable bearings and provided with a lip, u, and means foractuating the stop block, and the bottomless box, 10, provided withspring sides, 10, as and for the purpose specified.

10. The combination with the radial plungers, K, arranged in pairshorizontally and moving within suitable bearing plates and the camoperating the plungers, of the open ended molds, stop blocks, U,supported in suitable bearings and provided with lips, 2b, and means foractuating the stop blocks, the bottomless boxes, 20, provided withspring sides, to, turn table, 2, arranged eccentric to the main shaftand designed to receive the bricks from the bottomless boxes, to, andmeans for rotating the turn table, 2, as and for the purpose specified.

11. The combination with the radial plungers, K, arranged in pairshorizontally and moving within suitable bearing plates and the camoperating the plungers, of the open ended molds, stop blocks, U,supported in suitable bearings and provided with lips, '26, and meansfor actuating the stop blocks and the turn table, 2, arranged eccentricto the main shaft and designed to receive the bricks, and means forrotating the turn table as and for the pupose specified.

12. The combination with the radial plungers, K, arranged in pairshorizontally and moving within suitable bearing plates and the camoperating the plungers, of the open ended molds, stop blocks, U,supported in suitable bearings and provided with lips, it, means foractuating the stop blocks and the turn table, 2, arranged eccentric tothe main shaft and designed to receive the bricks from the bottomlessboxes, means for rotating the turn table and the stop bar, 3, extendingacross the turn table as and for the purpose specified.

THOMAS PARKER.

\Vitnesses:

B. BYD, H. G. S. YOUNG.

